Incandescent burner.



JfB. SHBEHY.

INCANDESCENT BURNER.

APPLIQATION FILED JUNB9,1905.

v PATENTED MAY l5, 1906.

I descence by applying thereto the llame from Experience has demon`UNITED STATES PATENT OFFICE.

JAMES B. SHEEHY, OF NEW YORK,

N. Y., ASSIGNOR OF ONE-THIRD TO PHILIP C. PECK, 'OF NEW YORK, N. Y.

INCANDESGENT BURNER.

specification of Letters Patent. Application iled June 9, 1905. SerialNo. 264,380.

T all whom, it m/cty concern:

Be it known that I, JAMES B. SHEEHY, a citizen ofthe United States, anda resident of the borough of'Manhattan, city, county, and

of my improved screen. Fig. 3 is a perspective view of same. A

Such mantles are usually heated to incana Bunsen burner. strated thedesirability of separating such flamel from the dischargeeoriiice of theBunsen burner by an intermediately disposed and supported screen,usually of wire-gauze, containing a multiplicity of perforations,

- through which are projected the gases-.min-

gled air and illuminating-gas-issuing from the discharge-orice of theBunsen burner.

Such screens have heretofore been constructed of either llat or conicalor dome-shaped form relatively to the said discharge-orifice and with nomeans to insure the projection of the major portion of the gas throu hsaid perforations in directions substantia ly at right angles to thesides of the mantle against which said as impinges, nor to insure suchprojection o the gas in a plurality of streams of substantially largerdiameter than the similar streams by which they are uniformlysurrounded.

I have discovered that increased candlepower is imparted to theincandescent mantle and other advantages secured by forming anddisposing such screens so as not only to extend over thedischarge-orifice of the Bunsen tube in a plane at ri ht angles to thecentral longitudinal axis o the latter, but also to extend,intermediately'of said plane and said discharge-orifice, in anapproximately vertically disposed tubular form concentric with said tubeand parallel with the roximate walls of said mantle and es ecia ly byintroducing into said substantially tubular and vertical portions ofsaid screen a plural- `ity of perforations, each very much larger inPatented May 15, 1906.

aperture than the remaining perforations of the'mesh of its wireauze.

Referring now'to t e drawings, A is a Bunsen burner, connected, asusual, with gasjpipe B and having centrally-disposed gasorifice C,air-ports c c, and an'annular externally-projecting bead a.

S is a cylindrical sleevefconcentric with A, supported thereby anddownwardly flared to form a shutter or screen over air-ports c c.

D is a cylinder concentric with S, downwardly constricted to tightlyembrace the latter, by which it is thus frictionally supported, andupwardly expanded-to form, if

desired, a suitable support lfor sleeve M, which latter carries securedthereto the studs ye e, whichcarry the usual wire frame E, by

which'thefmantle E is supported, as shown, in the usual manner.

The foregoing parts are none of them novel and are described by me onlyfor a better understanding of my invention.

On the mixing-tube of Bunsen burner A, I removably secure a cylinder ortube G, sleeved on latter and supported by itsbead a, as shown. Thelower part of G fits A closely, as shown. The upper part of G ispreferably of slightly greater diameter than A and extends preferablysomewhat above the discharge-orifice of the latter, or, if desired, evenas much as shown in the drawings, but lit will be understood that vinall cases G must extend above the lip d of `D sufficiently to admitfreepassage of the gas readily outward from H in adirection at rightangles to the central longitudinal axis of the burner.

H is my improved screen composed, preferably, of wire-gauze, fittedtoand supported by the edges of the discharge-orifice of G. It will beobserved that the gauze H is by my improvement so shaped and locatedthat parts thereof are disposed at a right angle to the centrallongitudinal axis of the Bunsen burner A and Vparts thereofcylindrically and concentrically and parallel with A, also that in thelast-described portion of said screen are a plurality of perforations hh of much greater aperture than and surrounded equally on all sides bythe substantially uniform smaller perforations h 7L between the meshesof the gauze.

By reason of the novel form and disposition of my screen H and thelelements associated therewith I am enabled to employ, if desired, highergas-pressures than in the previous constructions, and this without anyinjurious results, but, on the contrary, with great increase ofcandle-power. I am also with equal pressures enabled to direct the gasesfrom the Bunsen tube in such relation and comparative volumes to themantles as to increase the light efliciency and durability of thelatter. These results are due in part to the shape and dis osition of myscreen and its perforations an also in part to the relation of the artsD and G to the outflowing gas, whereby t e jets thereof are shelteredfrom induced upwardly-moving air-currents. I am also by my constructionenabled to separate the screen from the mantle for cleaning or otherpurposes, and this with consequentlydiminished rislr of breaking themantle. Moreover, my form of construction is readily adapted forapplication to different styles and sizes of Bunsen burners and alsowith equal increase of candle-power to the use of smaller mantles thanemployed in other forms of construction.

In Fig. l of the drawings the relative size, proportion, and location ofa mantle of the usual proportions and diameter usually required withburner-tubes of the size indicated is shown suggestively merely by theline F; but with my burners, owing to their peculiar construction, amantle of smaller diameter may be used-that is to say, a diameter suchas to admit disposition of its lower portion between the tube G and thecylinder D-in which case the said reduced mantle will be found to givesubstantially as satisfactory results as the more expensive and fragilemantles of larger diameter, D, as a fender tending to protect its lowerportions from inury.

l It will be observed that I do not conine myself to the preciseconstruction, form, or disposition of my screen nor to the particularsize of major apertures therein, as shown in the drawings. These may allbe varied with- -out departing from my invention, one essential anddistinguishing characteristic of which consists in the formation anddisposition of the screen in its relation to other parts, so that themajor portion of the gases from the Bunsen burner shall be projectedthrough the perforations of the screen in directions rectangularlyinclined directly against the sides of the mantle where most proximateto such perforations, and another essential and distinguishingcharacteristic of which is the incorporation in the screen ofperforations having very much greater apertures than those of theremaining perforations by which they are on all sides uniformlysurrounded and which major perforations are also so located as toproject the gases therethrough in streams the central longitudinal axesof which are disposed at a right angle to the most proximate sides ofthe mantle. By these means the pressure of the gas is not unduly checkedby the screen, while at the same time the popping back of the flame isprevented.

Having now described my invention, what I claim as new, and desire tosecure by Letters Patent, is the following, viz:

l. In an incandescent burner, of the type described, intermediate thedischarge-oriice of its Bunsen burner and the sides of its mantle, ascreen containing perforations of a given diameter and also interspersedamong, and surrounded by, said perforations other perforations of asubstantially larger diameter disposed and proportioned to project thegases passing therethrough in streams the centra longitudinal axes ofwhich are angularly disposed to that of the burner.

2. In an incandescent burner, of the type described, intermediate thedischarge-orifice of its Bunsen burner and the sides of its mantle ascreen containing perforations of a given diameter and also,interspersed among and surrounded by said perforations, otherperforations of a substantially larger diameter disposed so as toproject the gases from said burner horizontally in streams the centrallongitudinal axes of which are at an angle to the proximate surface ofthe sides of said mantle. l

3. In an incandescent burnerthe combination of a mantle, a Bunsenburner, an auxiliary tube concentric with and removably secured to saidBunsen burner, disposed over the discharge-oriiice of said auxiliarytube a screen containing perforations disposed to project the most partof the gases horizontally in streams the central longitudinal axes ofwhich are at a right angle to the proximate surface of the sides of saidmantle, and below said screen and concentric with said tube and saidcylinder, another burner of greater diameter, open at the top and closedat the bottom.

4. In an incandescent burner of the type described the combination of amantle, a Bunsen burner, an auxiliary tube concentric with and removablysecured to said Bunsen burner, disposed over the discharge-orifice ofsaid auxiliary tube a screen, and below said screen and concentric withsaid tube and said burner another cylinder of greater diameter, open atthe top, closed at the bottom, and so shaped, supported and disposedrelatively to said tube as to admit disposition between them of thelower portion of said man- IOO tle, said screen containing perforatonsof a gle to the proximate surface of the sides of given diameter andalso, interspersed among said mantle, substantially as described.

'and surrounded by said perforatons, other JAMES B SHEEHY perforatons ofa substantially larger diameter disposed so as to project the gases fromWitnesses:

said burner horizontally in streams the een- PHILIP C. PEGK,

tral longitudinal axes of which are at an an- GEORGE G. MEAsUREs.

Corrections in Letters Patent No. 820,676.

It is hereby certified that n Letters Patenty No. 820,676, granted May15, 1906, upon the application of James B. Sheehy, of New York, N. Y,for an improvement in Incandescent Burners, errors appear in theprinted'specication requiring oorrection, as follows: In line 112, page2, the Word cylinder should read burnenand same page vand line, the Wordburner should read cylinder; and that the said Letters Patent should Iberead With these corrections therein that the same may conform to therecord of the ease in the Patent Ofce.

. Signed and sealed this 16th day of October, A. D., 1906.

[SEAL] F. I. ALLEN,

Commissioner of Patents.

